What do you include in your power supply design? For years, I use a LM7805 regulator with an input and output capacitor as my simple 5V power supply on PCB's. (top drawing) Itypically plug in a 12VDC wall wart as a source. I use the same 12V to feed the Arduino. No AC design needed.
I discovered after my Spring Clean project, it would be nice to have power supply indicators. I seem to recall Shabaz had some nifty things he did with zenor diodes on power supplies. Great protection, little cost. I can't find my notes on that idea. A search for power supplies in the community I came across this. An isolated low noise +/-5V DC power supply From the post I added the indicators and the protection diodes to mine. (bottom drawing)
I've seen designs with an LM317 regulator, looks cool. I have a bag of LM7805 components I have to use up so regulator changes are not a high priority. I find it hard to walk away from components that are bought and sitting on the shelf.
I recalled when I worked in Engineering during the 80's, new Electrical Engineers assigned to a project would always start trying to improve the power supply. Our derogatory comment, there is a new power supply born for every Engineering graduate. As an Engineering Technologist I never understood why you would design something you could buy off the shelf.
For a few buck you can get a DC to DC power supply with indicators and other bells and whistles. Why build your own. I just like a 5V supply on my designs.
My goal is to enhance my current power supply design with some bells and whistles. Identify the parts and then perfect a PCB layout I can replicate in the future. My first step in any KiCAD project is copy the power supply. With that done I can start step 2. If you have insight to share that would be great. If you have a KiCAD drawing to share that is even greater. I'm no above begging to get ahead.
